What element forms an ion with an electronic configuration of [kr] and a –2 charge?
2 answers:
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The mole fraction of sulfur trioxide in the equilibrium mixture is 0.353.
Hence option (B) is the correct answer.
The ratio of the number of moles of one component of a solution or other mixture to the total number of moles representing all of the components.
We have to use algebra here,
Because in the equation has a stoichometry of 1, the other have 2,
let = x
You started with 2 moles, so the moles of at equilibrium will be 2 - X
has a stoichiometry of 2 compared to
, so will be 2X
( not minus from anything as you started with no moles of )
And then will also be 2X as it’s stoichiometry is 2, but as you started with 2 moles it will be 2-2X
If you add these in an equation to get total moles it’s
2 - 2X + 2 - X + 2X = 3.4 (total given)
and then gathering together becomes 4-X = 3.4
so,
4 = 3.4 + X
so,
x = 0.6
Therefore,
the moles of = 2 x 0.6 = 1.2
mole fraction = moles of the gas / total moles of gas
mole fraction = 1.2 / 3.4 = 0.353
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